[jira] [Commented] (AVRO-4241) BinaryDecoder should verify available bytes before reading

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-4241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18077583#comment-18077583 ] 

ASF subversion and git services commented on AVRO-4241:
-------------------------------------------------------

Commit 875c429012cdbf2ab8dadd15940170630b26a2e9 in avro's branch refs/heads/main from Ismaël Mejía
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=875c429012 ]

AVRO-4241: [Java] BinaryDecoder should verify available bytes before reading (#3725)

* AVRO-4241: [Java] BinaryDecoder should verify available bytes before reading

Add ensureAvailableBytes() pre-check in readString, readBytes,
readArrayStart, arrayNext, readMapStart, and mapNext to verify the
source has sufficient data before proceeding.

Byte-array-backed sources return an exact remaining count.
Stream-backed sources return buffered bytes plus InputStream.available(),
which is reliable for the finite streams used by DataFileReader and
DataFileStream.

Includes regression tests and updated array/map limit tests.

* AVRO-4241: [Java] Simplify no-op validatioin code and fix possible int overflow per PR comments

* AVRO-4241: Test the overhead of {@code minBytesPerElement} computation on GenericDatumReader

Benchmark to measure the overhead of {@code minBytesPerElement} computation during array/map decoding via {@link GenericDatumReader}. Tests complex, wide, and recursive schema structures to verify that the per-block schema traversal cost is acceptable.

> BinaryDecoder should verify available bytes before reading
> ----------------------------------------------------------
>
>                 Key: AVRO-4241
>                 URL: https://issues.apache.org/jira/browse/AVRO-4241
>             Project: Apache Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.11.5, 1.12.1
>            Reporter: Ismaël Mejía
>            Assignee: Ismaël Mejía
>            Priority: Blocker
>              Labels: pull-request-available
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>




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